noresm:modeldiagnostics

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Model Diagnostic Tools

This page links to tools used for NorESM model evaluation.

For comparison to older model simulations use the list of available simulations and runs, to be found ⇒ here.

Please, refer to GUIDE_ReadME_first and the ReadME files in each of the Model Components Diagnostic Tools (Packages) locations below for more details.

Usage: nohup [your work directory path]/[amwg/ice_diag]_template.csh >& out & 

Purpose: Model solution validation, evaluation, and analysis 
         compared to observations and reference model simulation.  

Description: Automated diagnostic packages for each of the NorESM model components (atmosphere, sea ice, land, ocean)
             based on the NCAR CESM diagnostics packages. 
             Written in NCL, NCO and C-Shell. Output is in the form of: .ps or .png plots and web-pages.

The packages are installed and stored in 4 locations; please use them on Cruncher or Grunch when possible:

On cruncher.uio.no/norstore.uio.no in:

/projects/NS2345K/diagnostics/Packages

On grunch.bccs.uib.no/hexagon.bccs.uib.no in:

/work-common/shared/noresm/diagnostics/Packages

On vilje.hpc.ntnu.no in:

/work/shared/noresm/diagnostics/Packages

There are 6 diagnostic tools CAM_DIAG (ready for use), CICE_DIAG (ready for use), CLM_DIAG (in testing),
POP_DIAG (in testing), MICOM_DIAG (in development) and CVDP_DIAG (the new NCAR Climate Package, in testing)

Currently only the CAM (AMWG) and the CICE packages are ported and ready to use. 
You will find for each of those c-shell macroscript *_template.csh.[machine]
Copy it in your working directory, change the paths and file names in the user-defined part of it and run.

Report any problems or suggestions to Detelina Ivanova: detelina.ivanova@nersc.no

(NEW 2015.04.23) First version of MICOM diagnostic package is available on grunch/norstore/hexagon/vilje. Please find more details here.

(NEW 2015.04.23)

The NorESM Diagnostic Packages can be downloaded via svn using the command:

svn export svn://noresg.norstore.no/NoresmDiagnosticPackages

A web-viewer is available at https://webserver1.norstore.uio.no:8443/websvn/wsvn/NORESG-diagpacks (user: guestuser, passw: friendly).

Aerosol and Chemistry, Clouds and Forcing Diagnostics

In both the default CAM5-aerosol packages (MAM3,MAM7) and the Oslo-aerosol packages, the budget terms can be taken out using a variable in the namelist :

Configuring a run with more aerosol diagnostics in (NorESM2)

&phys_ctl_nl
history_aerosol = .true.
/

Two more diagnostics are useful:

  • Enable estimates multiple calls to radiation which are necessary for effective radiative forcing estimates
  • Enable diagnostics for AEROCOM

To enable this, take the file cam/src/physics/cam_oslo$ vim preprocessorDefinitions.h and copy it to your SourceMods/src.cam folder

Change both preprocessor definitions to true

#define AEROCOM
#define AEROFFL

The AEROCOM-token turns on diagnostics needed for AEROCOM The AEROFFL-token tells the model to do additional radiation-diagnostics for aerosol indirect effect

Fields produced in monthly average files when running with budgets activated

Running with budgets activated will produce the following terms in the monthly output files:

Output variable name Meaning Comment
SF{Tracer} Emissions from surface
GS_{Tracer} gas phase chemistry 3D-emissions and gas phase washout included in this term
AQ_{Tracer} aquous chemistry
{Tracer}_Mixnuc1 Activation in clouds and evaporation of cloud droplets
{Tracer}_DDF Dry deposition flux (aerosol tracers)
{Tracer}_SFWET Wet deposition flux (aerosol tracers)
{Tracer}_condtend loss/production in condensation/nuclation (CAM-Oslo only)
{Tracer}_coagTend loss/production in coagulation (CAM-Oslo only)
DF_{Tracer} dry deposition flux (gas tracers) output with history_aerosol with CAM-Oslo only
WD_A_{Tracer} wet deposititon flux (gas tracers) output with history_aerosol with CAM-Oslo only
{Tracer}_CLXF 3D-emissions (“external forcing”) output with history_aerosol with CAM-Oslo only
{Tracer}_clcoagTend loss of tracer due to coagulation with cloud droplets output with history_aerosol with CAM-Oslo only

Note: Since 3D-emissions and and gas washout rates are included in the term GS_{Tracer} in the mozart chemistry solver, the individual terms can be found like this (example for SO2):

ncap2 -O -s GS_ONLY_SO2=GS_SO2-WD_A_SO2-SO2_CLXF infile.nc outfile.nc

More info on SO2 budgets (see /models/atm/cam/tools/diagnostics/ncl/ModIvsModII/ for scripts with info on all tracers):

GS_SO2 contains the SO2 budget terms for all that goes on in the chemistry-routine, which is
1) Gas phase chemistry, 2) Wet deposition, and 3) 3D-emissions.
Gas phase chemistry is both production from DMS (GS_DMS) and loss through OH (GL_OH)
For calculations of net loss, e.g. used to calculate SO2 life-times, we're interested in the
loss through OH from the chemistry-term (GL_OH).
GS_SO2 = GL_OH + SO2_CLXF - WD_A_SO2 - GS_DMS*64/62
or
GL_OH = GS_SO2 - SO2_CLXF + WD_A_SO2 + GS_DMS*64/62

Estimating chemical loss w.r.t. S (instead of SO2 or DMS), for comparison with CAM4-Oslo numbers:
net chemial loss gas phase = (GS_SO2/1.998 - SO2_CLXF + WD_A_SO2)/1.998 + GS_DMS/1.938
net chemical loss = net chemial loss gas phase + AQ_SO2/1.998

Finally, total net loss (used to calculate life-time = -load/(net loss), where load = cb_SO2/1.998):
net loss =
- WD_A_SO2/1.998 ;wet deposition in kg/m2/sec (positive in output file)
- DF_SO2/1.998 ;dry deposition in kg/m2/sec (positive in output file)
+ AQ_SO2/1.998 ;wet phase production of SO4 in kg/m2/ses (negative in output file)
+ (GS_SO2 - SO2_CLXF + WD_A_SO2)/1.998 + GS_DMS/1.938 ; net chemical loss gas phase

Looking at the aerosol budgets (CAM-Oslo only)

  • Go to the directory models/atm/cam/tools/diagnostics/ncl/budgets
  • Change the filename to use in the file budgets.ncl (“myFileName” around line 18). Should be for example yearly average of month-avg file in a run with budgets
  • Run the script budgets.sh to create a pdf-file (output.pdf)

Making ncl plots of often used aerosol and cloud fields, including ERFs, for two model versions (CAM-Oslo only)

  • Make a local copy (on Linux) of the directory models/atm/cam/tools/diagnostics/ncl/ModIvsModII
  • Assuming that you have produced output data from 4 simulations: two different model versions, each with PD and PI emissions, and all run with #define AEROCOM & AEROFFL:
  • In ModIvsModII.csh (note: read the header info):
  • - edit model info for the first model (shown to the left in the plots): modelI = CAM4-Oslo or modelI = CAM5-Oslo ?
  • - provide paths and partial file names of the model data (PD and PI) for Model I (CAM4-Oslo or CAM5-Oslo) and Model II (must be CAM5-Oslo)
  • - choose desired plot format (plotf=ps, eps, pdf or png)
  • Run the script: ./ModIvsModII.csh
  • Furthermore, to display the plots in an organized form by use of a web browser (only possible if the chosen plot format is png):
  • - edit general model info (only) in ModIvsModII.htm, and manually cut and paste the mass budget numbers from the script output into this file
  • - copy all png (plots) and htm files to the desired output (common) directory
  • - open ModIvsModII.htm in your browser: hyper-links to all other htm files, including plots, are found here

To prepare output so that it is processed automatically by the aerocom tools, use the script located at models/atm/cam/tools/aerocom/ in the svn repository. The script prepares files such that the idl aerocom tools prepare plots for the aerocom webinterface: URL link to NorESM on AeroCom webinterface

The script requires <ModelName>_<ExperimentName> and <Period> as input.

<Period>: for a climatological average and run choose 9999 , for nudged simulations choose the year of the meteorology

<ModelName>_<ExperimentName>: is the dataset identifier under which the plots appear on the AeroCom webinterface
of the form NorESM-CAM5_svn{RevisionNumber}_YYMMDD{initials}_Freetext.
Example: “NorESM-CAM5_svn1094_151201AG_CMIP6endelig”
Initials AG: Alf Grini, AK: Alf Kirkevåg, DO: Dirk Olivie…

The script creates files named like

“aerocom3_<ModelName>_<ExperimentName>_<VariableName>_<VerticalCoordinateType>_<Period>_<Frequency>.nc”

<ModelName> ⇒ eg NorESM-CAM53
<ExperimentName> ⇒ svn{RevisionNumber}_YYMMDD{initials}_Freetext
<VariableName> ⇒ aerocom variable names
<VerticalCoordinateType> ⇒ “Surface”, “Column”, “ModelLevel”, “SurfaceAtStations”, “ModelLevelAtStations” 
<Period> ⇒ eg “2008”, “2010”, “9999”
<Frequency> ⇒ “timeinvariant”,”hourly”, “daily”, “monthly”, “sat1000”, “sat1330”, “sat2200”, “sat0130”

Note that VerticalCoordinateType is dependent on the variable!! It is not a question about “vertical coordinate type used in model simulations”!

The script copies files on norstore into /projects/NS2345K/CAM-Oslo/DO_AEROCOM/<ModelName>_<ExperimentName>/renamed/

ESMval CIS JASMIN platform and tools

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  • Last modified: 2022-05-31 09:23:24
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